The classical Heckman (1976, 1979) selection correction estimator (heckit) is misspecified and inconsistent if an interaction of the outcome variable and an explanatory variable matters for selection. To address this specification problem, a full information maximum likelihood estimator and a...

Obwohl heute ein weitgehender Konsens darüber vorliegt, dass der Qualitätssicherung bei Humandienstleistungen ein ganz besonderer Stellenwert zukommt, fehlt eine systematische Auseinandersetzung mit den Gründen und Möglichkeiten einer solchen Qualitätssicherung. Am Beispiel der Bildung,...

In this paper, we investigate the intergenerational transmission of smoking behavior from parents to their children using data from the German Socio-Economic Panel, surveyed in 1999 including 813 youths aged 16 through 19. We find strong evidence, that parental smoking significantly increases...

This paper presents a life cycle model for the demand for health, and derives empirical specifications that distinguish between permanent and transitory wage responses. Using panel data, we estimate dynamic health and health input demand equations. We find evidence of negative transitory wage...

One cornerstone of current attempts to reform the German public health care system by introducing private insurance schemes is the assumption that economic incentives play an important role in individual decision-making about using medical help. This hypothesis is examined for the case of demand...

This paper presents a life cycle model for the demand for health, and derives empirical specifications that distinguish between permanent and transitory wage responses. Using panel data, we estimate dynamic health and health input demand equations. We find evidence of negative transitory wage...